The Rolling Stones kicked off their 50 and Counting run of five mega shows on Sunday evening at London’s O2 Arena at a concert featuring special guests Mary J. Blige (see below) and Jeff Beck (see above). Notably, the show was surprisingly opened with the McCartney/Lennon penned tune “I Wanna Be Your Man”. At tomorrow night’s show in London, the legendary blues rock band will be joined on stage by Eric Clapton and Florence and the Machine singer Florence Welch, as well as former Stones Mick Taylor and Bill Wyman.